Intelligent configuration server

ABSTRACT

An intelligent configuration system automatically logs a sample of a PBX Call Detail Recording (CDR) message. The sample CDR messages are sent via modem from a local call accounting system connected to the PBX to a central configuration server. The configuration server analyzes the sample CDR messages to determine the PBX type. The appropriate PBX interface file for the identified PBX type is transmitted back to the call accounting system and used by the accounting system to interpret and price CDR messages output from the PBX into call accounting and traffic analysis reports. Identification and location data is transmitted from the accounting system to the configuration server. The configuration server uses the data to automatically transmit and update rate tables used in the accounting system.

This application is continuation of application Ser. No. 08/626,173 filed Mar. 29, 1996 now U.S. Pat. No. 5,734,705.

BACKGROUND OF THE INVENTION

This invention relates generally to a Private Branch Exchange (PBX) and more particularly to an intelligent configuration server that automatically initializes a call accounting system which generates reports from PBX call detail record output data.

Phone calls from a PBX system are tracked and reported using call accounting programs. The accounting program reads Call Detail Recording (CDR) messages alternatively referred to as Station Message Detail Recording (SMDR) messages which are output from the PBX. A PBX output port, usually comprising an RS-232 receptacle, outputs the CDR messages. The accounting program is loaded onto a personal computer (PC) and the PC is connected directly into the RS-232 receptacle on the PBX or through an inline intermediate storage device, or via a dial-up modem.

The CDR messages output from the PBX output port contain information about each telephone call processed by the PBX. The call accounting program reformats the CDR messages into sophisticated tracking reports. For example, the accounting program can reformat the CDR messages into lists identifying telephone calls according to business department, telephone extension or by time of day. Different PBX manufacturers and even different PBX models from the same manufacturer may generate different CDR message formats. Therefore, in order to accurately decipher CDR messages, accounting programs must be configured specifically for the PBX type.

A rate table is a database that contains the cost of calls, for example, referenced to different parameters such as country codes, city codes, area codes and exchange based on the number dialed plus certain time-of-day considerations. Typically, rate tables are manually loaded into the PC running the accounting program via floppy disk. The rate tables are periodically updated, again via floppy disk, to reflect changes in phone tariffs.

Typically, call accounting programs require a local PBX technician to identify the PBX manufacturer and PBX model number as part of the sales order or part of the installation procedure. The call accounting program is either hard-coded to support the specific PBX type or shipped with pre-configured tables that support known PBX types. If the PBX type and model number are unknown to the local PBX technician or if the PBX type is not one of the PBX types hard-coded into the call accounting software, the accounting program cannot generate reports from the PBX.

Rate tables are typically manually loaded into the PC running the accounting program. Rate tables vary according to location of the PBX (area code and exchange) or vary according to country codes and city codes. Therefore, a different rate table is required for each accounting program or for each site configuration within the program which is operating in a different Local Exchange Carrier's rate center. There are over 15,000 rate centers in the U.S. Presently, the different rate tables are copied onto floppy disks and sent to each local PC software operator. The software operator then manually copies the contents of the floppy disk into the PC running the accounting program. Tariffs and numbering plans for telephone calls frequently change. Thus, rate tables must be constantly updated in each PBX accounting program. Manually tracking the appropriate rate table for each accounting program and then periodically mailing updated rate tables to each customer is time-consuming, expensive and prone to mishandling resulting in magnetic media damage.

Accordingly, a need remains for automatically reconfiguring an accounting program to run with different PBX types and CDR software package updates on a PBX, automatically updating program rate tables for each accounting program and increasing security for proprietary software used in the accounting program.

SUMMARY OF THE INVENTION

An intelligent configuration server analyzes sample CDR messages from different PBXs. A sample CDR message from a PBX is transmitted to the central configuration server via a standard dial-up modem. The configuration server determines the actual PBX type by comparing the sample CDR message with known CDR message streams previously stored in server memory.

If the PBX type is identified, a corresponding PBX interface file is transmitted from the configuration server back to a local PC connected to the PBX. The PBX interface file is used by the PC accounting program to identify the correct format for CDR messages output from the PBX. The accounting program can then correctly interpret the CDR messages output from the PBX into call reports. If a sample set of CDR messages is not recognized by the configuration server, a message is transmitted to the local PC software operator and to a customer service operator maintaining the configuration server.

The configuration server downloads rate tables via modem to the local PBX. The PC call accounting software automatically sends identification (ID) and location data to the configuration server. The ID and location data includes the name, address, area code and exchange for the local PBX. The configuration server uses the ID and location data to identify the appropriate rate table for the local PBX. The rate table is then automatically downloaded from the configuration server to the local PC for use with the accounting program.

Each remote PC software operator can manually request rate table updates at any time from the configuration server or schedule the downloads to take place automatically on a periodic basis. Thus, operator interaction is not required to maintain up-to-date tariffs in customers' call accounting programs.

CDR message analysis and rate table assembly is performed at one central configuration server location. Security of proprietary CDR message analysis software is increased since analysis software is not distributed to end users. The time and cost of distributing, tracking and updating rate tables for each customer is decreased since rate tables are automatically sent via modem from a central server. Repeated end-user training due to personnel changes is reduced and system accuracy improved through the automation of this process.

The foregoing and other objects, features and advantages of the invention will become more readily apparent from the following detailed description of a preferred embodiment of the invention which proceeds with reference to the accompanying drawings.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a diagram of an intelligent configuration system according to the invention.

FIG. 2 is a detailed diagram of the intelligent configuration system shown in FIG. 1.

FIG. 3 is a step diagram showing a method for installing and operating the intelligent configuration system shown in FIG. 1.

DETAILED DESCRIPTION OF THE INVENTION

FIG. 1 is a schematic diagram of an intelligent configuration system 12 according to the invention. A configuration server 14 is located at a central system support location and is coupled to a modem 16. One example of a configuration server 14 is a PC workstation attached to a Novell Netware 3.12 version server. However, any computer capable of receiving, sending and processing data in a manner described below can be utilized. For example, in another embodiment of the invention, a stand-alone call accounting system is used independently of the PC environment and comprises special hardware including a processor and memory for storing call records and rate tables, etc.

PBXs 22A, 22B and 22C each support a separate telephone network at different locations and are any of a large number of commercially available PBX systems well-known to those skilled in the industry. Each PBX 22A-22C is coupled to a local personal computer (PC) 20A-20C, respectively. Modems 18AB18C are connected to each local PC 20A-20C, respectively, and provide electronic data communication between the local PCs 20A-20C and configuration server 14 via modem 16.

The transmission of rate tables and configuration data between the configuration server and the host PC can be conducted by means other than an analog modem. In one embodiment, data is transmitted over a digital network, such as ISDN through a terminal adapter.

FIG. 2 is a detailed diagram of both the configuration server 14 and one of the local PCs 20A shown in FIG. 1. Local PCs 20B and 20C operate in a similar manner to PC 20A described below. The configuration server 14 includes a processor 15 connected to a memory 17. Memory 17 contains three databases. A PBX database includes PBX interface files containing information on different PBX types supported by the intelligent configuration system 12. For example, the PBX interface files may describe distinguishing characteristics of CDR message strings output by particular PBX types and identifies the appropriate translation routine used by the accounting program to interpret and price the CDR messages.

A rate table database contains rate tables for different telephone parameters such as area codes and exchanges or country codes and city codes instead of area codes and exchanges and multiple service providers. The rate tables contain tariff information for local and long distance telephone calls made through different telephone companies according to the day of the week and the time of the day. A customer database contains customer files for each accounting program supported by the intelligent configuration system 12.

Local PC 20A includes a processor 19 coupled to a memory 21. The memory 21 stores the accounting program, a rate table corresponding with the local PBX area code, a PBX interface file and ID and location data. The accounting program is used by processor 19 to generate telephone accounting reports and the rate table is used by the accounting program for cost analysis and traffic engineering analysis. The PBX interface file is used by the accounting program to identify the CDR message format output from the PBX. The ID and location data are transmitted to the configuration server 14 for referencing the appropriate customer file in memory 17.

The processor 19 receives ID and location data through a keyboard input 26 or automatically from the installation floppy diskette, and CDR messages from PBX 22A through an RS-232 input 24. The processor 19 transmits via modem 18A (FIG. 1) the PBX ID and location data and sample CDR messages 23 to processor 15. Processor 15 uses the CDR and location data 23 to identify the correct PBX interface file and rate table 25 for transmitting back to processor 18.

Referring to FIG. 3, the intelligent configuration system 12 operates in the following manner. For simplicity, operation is referenced only to local PC 20A. Local PCs 20B and 20C operate in a similar manner. Local PC 20A is connected through RS-232 port 24 (FIG. 2) to the PBX 22A in step 34 and local PC 20A actuated in step 36. A PBX operator in step 38 inputs ID and location data via the keyboard input 26 (FIG. 2) into local PC 20A. Step 40 sends the ID and location data to the configuration server 14 via modems 18A and 16 (FIG. 1).

In step 42, the local PC 20A reads a set of sample CDR messages from the PBX 22A and step 44 transfers the sample CDR messages to configuration server 14. Step 46 analyzes the sample CDR messages in the configuration server 14 to determine the PBX type. The configuration server 14 matches the sample CDR messages sent from local PC 20A by identifying unique message characteristics described in a PBX description file stored in memory 17 (FIG. 2) for known PBX types.

The example below shows sample SMDR records output from different PBX units.

    __________________________________________________________________________     EXAMPLE #1     Sample SMDR Records:     08/03 07:59            0000:01:34 2630                         121233380402542630                                   X143     08/03 07:59            0000:02:02 2502                         161096233332542502                                   X142     08/03 08:01            0000:00:14 X124                     004 4506 1111     3101     08/03  08:01            0000:00:30 4801                         52010732544801                                   X146     08/03 08:02            0000:00:18 4352                         140439756432544352                                   X147     08/03  08:03            0000:00:14 X122                     004 4506 1111 2208     08/03 08:02            0000:02:52                     X123                         004 1111          3102     08/03  08:02            0000:02:20                     X124                         004 1111      3103     08/03 08:05            0000:00:10                     2630    130554669082542630                                       X148     08/03 08:05            0000:00:21                     X124                         004 1111          2101     08/03  08:05            0000:00:07                     X147                         * * *                             9         T     08/03 08:05            0000:00:14                     X124                         005 4506 1111     2103     08/03  08:06            0000:00:11                     4352    18006944997   T4     08/03 08:05            0000:01:08                     4722    18008762722   T3     08/03 08:05            0000:01:12                     X148                         004 1111          2104     08/03 08:06            0000:00:30                     X124                         005 1111          3102     08/03 08:04            0000:02:44                     X209                         001 2937          2937     08/03 08:04            0000:02:51                     4353    2732937   T1     08/03 08:07            0000:00:05                     X205                         023 2958      T 3364     PBX Analysis Match:     Switch Type     mitel     Description     MITEL SX100/SX200-MITL9105/9110-097-451NA-AUG81     Call Type    Outgoing     Record Type     T|X|A 62..62     Date            mm/dd 2..6     Time            hh:mm 8..12     Duration     hh:mm:ss 15.22     Switch Type     mitel     Description     MITEL SX100/SX200-MITL9105/9110-097-451NA-AUG81     Call Type    Incoming     Record Type     T|X|A 24..24     Date            mm/dd 2..6     Time            hh:mm 8..12     Duration     hh:mm:ss 15.22     EXAMPLE #2     Sample SMDR Records:     N 059 00 T004001 DN7309     09/15 08:20 00:05:48         0000 0000     D 060 00 T004001 DN7309     09/15 08:26 00:05:48     S 061 00 T004001 DN8091     09/15 08:26 00:00:06         0000 0000     N 062 00 DN7200 T002008 016.0.00.10 09/15 08:26 00:00:40 A     800215104166242        0000 0000     N 063 00 T004002 DN7133 014.0.00. 14 09/15 08:27 00:00:02        0000 0000     N 064 00 DN7394 T002007                        09/15 08:26 00:00:54 A 80214042307088         0000 0000     N 065 00 DN7262 T002009 023.0.00.02 09/15 08:26 00:03:02 A     800212092231660        0000 0000     PBX Analysis Match:     Switch Type     nt.sub.-- tenan     Description     NT MERIDIAN 1 - - MULTI-TENANT CODE     Call Type    Incoming     Record Type     (N|S|E)&T 1..1&10..10     Date            mm/dd 38..42     Time            hh:mm 44..48     Duration     hh:mm:ss 50..57     Switch Type     nt.sub.-- tenan     Description     NT MERIDIAN 1 - - MULTI-TENANT CODE     Call Type    Outgoing     Record Type     (N|S|E)&T 1..1&18..18     Date            mm/dd 38..42     Time            hh:mm 44..48     Duration     hh:mm:ss 50..57     Digits       (A y*) 59..80     Switch Type     nt.sub.-- tenan     Description     NT MERIDIAN 1 - - MULTI-TENANT CODE     Call Type    TENANT     Record Type     00&00 10.11&18..19     EXAMPLE #3     Sample SMDR Records:     0952 0001 7 9 83   886819  722   60 15     0952 0002 7 9 83   18002359216                                702   70 03     0952 0017 0        785     301     0952 0021 9        799     83    70 02     0952 0045 7 9 83   7543788 706   60 08     0953 0004 7 9 80   0118525294118#                                371   70 14     0953 0062 9        799     80    70 06     0953 0000 7 9 83   8886819 722   60 09     0954 0188 9        788     84    70 04     0954 0001 0        740     302     0954 0011 9        799     83    70 02     0954 0005 0        771     362     0954 0015 7 9 83   5965433 705   60 12     0954 0020 9        754     84    70 05     0955 0004 7 9 80   0118525294118#                                371   70 12     0955 0067 7 9 83   5719330 343   60 07     0956 0002 7 9 83   2778194 310   60 15     0956 0005 7 9 83   2700535 771   70 14     0956 0038 7 9 83   6680264 312   70 10     0956 0034 9        799     80    70 16     0956 0001 0        312     301     0957 0001 7 9 83   2767255 771   70 11     0957 0015 9        799     83    70 02     0957 0009 7 9 83   3588000799                                792   70 13     0957 0007 7 9 83   411     788   60 12     0957 0004 7 9 80   0118525294118#                                371   70 10     0957 0003 9        794     84    70 07     PBX Analysis Match:     Switch Type     att75v3     Description     AT&T SYS 75 R1V3     Call Type    Incoming     Record Type     9 11..11     Date     Time            hhmm 1..4     Duration     hmmt 6..9     Extension       x+ 32..35     Switch Type     att75v3     Description     AT&T SYS 75 R1V3     Call Type    Outgoing     Record Type     1|7|A|C 11.11     Date     Time            hhmm 1..4     Duration        hmmt 6..9     Extension    x+ 38..41     Digits       y+ 21..35     __________________________________________________________________________

The configuration server 14 recognizes PBX types by matching the characteristics, such as record format, (other options are possible for other PBXs) with previously stored samples. As shown in the examples above, each of the three PBX units outputs a different SMDR record format. The configuration server 14 can accordingly identify the SMDR report type according to the specific format characteristics.

Each sample contains a default of 4000 characters or approximately 45 call records, depending on the CDR record length. A predetermined number of matches to the same PBX type is required before a match is considered complete. Each CDR message in the sample uploaded to the configuration server is evaluated against all stored PBX types.

Step 48 downloads the appropriate PBX interface file for the identified PBX type to local PC 20A. Failure to recognize a PBX type results in the configuration server 14 sending a message to local PC 20A as well as to customer service personnel operating the configuration server 14. The pattern matching program used by the configuration server 14 can be modified by a technician to add or change PBX recognition criteria. The sample CDR messages received from local PC 20A are preserved in memory on the configuration server 14 as PC files identified by the customer ID.

Step 50 downloads a rate table from the configuration server 14 to local PC 20A. The configuration server 14 uses the ID and location data (e.g., area code) transmitted in step 40 to locate the appropriate rate table for PBX 22A. Step 52 uses the downloaded PBX interface file and the downloaded rate table to generate accounting reports from the CDR messages output from PBX 22A.

The PBX operator can manually request rate table updates at any time or schedule the downloads to take place on a periodic basis. Decision step 54 monitors either a manual keyboard request or a preprogrammed periodic request for updating the rate table. When a manual or an automatic update request is made by the local PC 20A, decision step 54 jumps to step 50. The configuration server 14 then searches the customer database for the name of the rate table file of the local PC requesting the update. The configuration server locates the appropriate rate table and then sends the rate table to local PC 20A. Subsequent telephone reports generated in step 52 use the updated rate table transmitted in step 50.

Each session between the local PC 20A to the configuration server 14 is initiated with a unique serial number. The configuration server 14 verifies the serial number and the command in the customer database. If the serial number is not in the database or has already been registered, communication between the local PC 20A and configuration server 14 is terminated. Thus, the configuration server 14, without operator intervention, constantly monitors which accounting programs are initialized and when each accounting program requests a rate table update.

It should be noted that other embodiments of the system also come within the scope of the invention. For example, the entire system including the local PC and the configuration server can be contained within a single stand-alone PC which stores sample SMDR reports, rate tables, etc., performs the functions of configuration server 14 and local PC 20.

Having described and illustrated the principles of the invention in a preferred embodiment thereof, it should be apparent that the invention can be modified in arrangement and detail without departing from such principles. We claim all modifications and variation coming within the spirit and scope of the following claims. For example, the invention could be used in an environment where one PC monitors the performance of many PBX's. In such a situation, the PC could have an internal buffer that stores CDX messages until retrieved by the PC. 

We claim:
 1. A system comprising:telephone call interconnecting means which includes reporting means for generating CDR messages; a configuration server; communication means for electronically transmitting said CDR messages from said telephone call interconnecting means to said configuration server; means based on said CDR messages in the configuration server for examining said CDR messages and based on said CDR messages for generating identification data identifying said telephone call interconnecting means; and means for transmitting said identification data to said telephone call interconnecting means to facilitate configuration of said telephone call interconnecting means.
 2. A system according to claim 1 wherein the telephone call interconnecting means includes a personal computer running a telephone accounting program, said telephone accounting program reformatting said CDR messages into accounting and traffic engineering analysis reports according to said identification data received from said configuration server.
 3. A system according to claim 1 wherein said telephone call interconnecting means includes memory for storing a telephone rate table transmitted to said telephone call interconnecting means from said configuration server.
 4. A system according to claim 1 wherein the configuration server includes a processor and a memory, the processor comparing the CDR messages received from said telephone call interconnecting means to sample CDR messages for different types of telephone call interconnecting means previously stored in the configuration server memory.
 5. A system according to claim 4 wherein the configuration server memory stores multiple rate tables each associated with a different telephone area code and exchange, one of said multiple rate tables transmitted to said telephone call interconnecting means according to a local telephone area code associated with said telephone call interconnecting means.
 6. A system comprising:a first means which generates CDR messages which identify said first means; a configuration server located at a location which is remote from said first means; second means for communicating said CDR messages from said first means to said configuration server; third means in the configuration server for identifying said first means from said CDR messages and for generating identification data; forth means for transmitting said identification data from said configuration server to said first means, and sixth means in said first means for using said identification data transmitted from said configuration server to enable said first means for subsequent operations.
 7. A distributed system comprising:a first system which generates CDR messages which identify said first system; a configuration server located at a location which is remote from said first system, means for communicating said CDR messages from said first system to said configuration server; means in the configuration server for identifying said first system from said CDR messages and for generating system specific data; means for transmitting said system specific data from said configuration server to said first system, and means in said first system for using said system specific data transmitted from said configuration server to enable said first system for subsequent operations.
 8. An automatic configuration system for a telephone account reporting system, comprising:multiple telephone call interconnecting means each having an output for generating CDR messages; multiple local computers each coupled to an associated one of the interconnecting means for receiving and transmitting the CDR messages; and a configuration server receiving a sample CDR message from each one of the local computers, the configuration server identifying an associated interconnecting means type for each of the interconnecting means according to the sample CDR messages and transmitting the associated interconnecting means type back to the local computers.
 9. An automatic configuration system according to claim 8 wherein the configuration server comprises a server processor and a server memory, the server processor comparing the CDR messages transmitted from each one of the local computers with CDR messages for different interconnecting means types stored in the server memory.
 10. A configuration system according to claim 8 wherein each one of the local computers includes a local processor and a local memory for storing the associated one of said multiple rate tables, the local processor generating account reports and traffic analysis reports according to the associated one of the rate tables and the associated interconnecting means type transmitted from the configuration server.
 11. A method for automatically configuring a call reporting system connected to a telephone system, comprising:providing a configuration server for storing telephone system type information; generating a sample CDR message from the telephone system; reading the sample CDR message generated from the telephone system with the reporting system; transmitting the sample CDR message from the reporting system to the configuration server; identifying the telephone system type with the configuration server according to the sample CDR message; transmitting the identified telephone system type from the configuration server to the reporting system; and generating telephone reports from CDR messages output from the telephone system according to the telephone system type sent from the configuration server.
 12. A method according to claim 11 including the following steps:transmitting telephone system identification and location data from the reporting system to the configuration server; identifying a rate table in the configuration server associated with the transmitted telephone system identification and location data; transmitting the identified rate table to the reporting system; and generating call rates in the telephone reports according to the transmitted rate table. 